lavarnd.up.railway.app offers simple REST endpoints that derive real-world randomness from live lava lamp images. Its APIs compute Shannon entropy, generate high-entropy passwords, and produce SHA-256 / SHA3-256 hashes from sampled pixels — ideal for seeding CSPRNGs, creating unpredictable tokens, or auditing entropy. Pricing is extremely low (around $0.0010 per call), making it practical for development and production uses.